I have new FMS 19#.
I replaced the header gaskets once already. There is a bad machine job where
the rear driver side header mates with the head. It's was machined with a
very narrow land and that's where it probably blew again. I used Fel-Pro's but
was thinking of trying the Mr. Gasket Ultra Seal. As per Summit "This premium
exhaust gasket set is designed and constructed to improve sealing of exhaust
header flanges. Unlike standard exhaust gasket material, Ultra-Seal exhaust
gaskets incorporate a graphite-impregnated facing and a steel expanded metal
core that reinforces and increases the tensile strength. This gives the gasket
the ability to conform to warped flanges, giving it better sealing capabilities
without deteriorating or cracking under the excessive heat and pressure common
in the exhaust system" Anyone try these? How about Percy's dead soft
aluminum gaskets?
Thanks,
James
In a message dated 5/27/2003 10:48:20 PM Eastern Standard Time,
bernd@texas.net writes:
> Put it on a scanner and find out what the Short-Term and Long-Term fuel
> trim are. This will tell you if you'll need to add some sort of
> fuel-curve tuning device or not. Definitely fix the header leak as it
> can throw the O2 readings off and the mixture won't be correct.
>
> You didn't list which ones you're running...24# or 19#?
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of
> JAMEPC@aol.com
> Sent: Tuesday, May 27, 2003 8:24 PM
> To: aol@dakota-truck.net
> Subject: DML: O2 code/Fluctuating Idle
>
> My PCM thew the following code: 52 Sustained rich mixture exceeds range
> of
> control. Also at the same time, the RPM's started fluctuating. At
> idle, it
> fluctuates 200 RPM and I can feel it hesitate on acceleration. The O2.
> sensor
> has been replaced and it still throws the same code. Also, I may have a
> leak in
> my header gasket. Are these a related problem? It does run a little
> rich at
> idle due to the cam. Here's my specs.:
> Thanks,
> James
>
> 93 CC, 5.2, Rebuilt engine 30 over, 604 Competition Cams:lift .512
> dur@.050
> 210, 220 / LSA 112, Heads ported/5 angle , 2bbl M1 Intake, Jet Hot
> Coated
> Thorley Headers, Ported TB, True Duals w/ FM 70's and Cuda Tips, MP PCM,
> MP Cast
> Valve Covers, MP Cast Air Cleaner, K&N Filter,MP DRT Chain, MSD 8.5mm
> wires, MSD
> 6T, Blaster coil, Underdrive Crank Pulley, APS 46 RH Transmission w/ All
> The
> Options, MP Torque Converter, Viper FanLowered 2-3. Energy Suspention
> body
> mounts, A arm bushings &sway bar bushings, 4.10's W/ Dana Spicer Trac
> Loc,
> Road Master Active Suspention, Doestech Shocks, Front and Rear Anti Sway
> Bars,
> Cowl Hood, Sir Michales Roll Pan.
>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:21 EST